Quantization noise analysis of wave digital and lossless digital integrator allpass/lattice filters

Quantization noise levels of two low-sensitive allpass filter structures, namely wave digital circulator filters (WDCF) and lossless digital integrator filters (LDIF), are compared. Allpass filters are of interest for design of lowpass and bandpass lattice filters. The results show, primarily, that second-order LDIFs have lower total quantization noise gains than corresponding WCDFs for any pole configuration within the right half-circle of the z plane. The benefit of using ladder LDIFs rather than cascaded first and second order sections is also demonstrated.

[1]  Svante Signell,et al.  Suppression of overflow limit cycles in LDI allpass/lattice filters , 1999, ISCAS'99. Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No.99CH36349).

[2]  Lennart Harnefors,et al.  Computationally fast lattice bilinear digital ladder filters with comparison to circulator WDFs , 1998, ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187).

[3]  A. Fettweis.  Wave digital filters: Theory and practice , 1986, Proceedings of the IEEE.

[4]  B. Nowrouzian,et al.  Theory and design of LDI lattice digital and switched-capacitor filters , 1992 .

[5]  Lennart Harnefors,et al.  Allpass and lattice bilinear digital ladder filters , 1996, 1996 IEEE International Symposium on Circuits and Systems. Circuits and Systems Connecting the World. ISCAS 96.

[6]  S. Summerfield,et al.  Realisation of lattice wave digital filters using three-port adaptors , 1995 .

[7]  B. Nowrouzian.  A new approach to the exact design of LDI lattice digital filters , 1993, Proceedings of 36th Midwest Symposium on Circuits and Systems.

[8]  Lennart Harnefors,et al.  Suppression of overflow limit cycles in LDI all-pass/lattice filters , 2000 .

[9]  Lars Wanhammar.  DSP integrated circuits , 1999 .

[10]  Tapio Saramaki.  On the design of digital filters as a sum of two all-pass filters , 1985 .

[11]  T. Claasen,et al.  Effects of quantization and overflow in recursive digital filters , 1976 .